Shock-absorber and recoil-check.



D. F. OLIVER.

SHOCK ABSORBER AND REGOIL GHECK.

APPLICATION FILED JULY H, 1914.

Patented Aug. 24, 1915.

2 SHEETS-SHEET 1.

WITNESSES:

D. F. OLIVER. SHOCK ABSORBER AND RECOIL CHECK.

APPLICATION FILED JULY 17; I914. 1,151,036. I Patented Awrg: 24, 1915.

2 SHEEIS SHEET 2.

WITNESSES: Z JNVENTOR 'nocron r. OLIVER, or OAKLAND, cmonma.

SHOCK-ABSORBER AND RECOILCHECK.

v To all whom it may concern Be it known that I, Docron FfQL vnn, acitizen of the United 'States, residing at Oakland, in the county ofAlameda and State of California, have invented new and usefulImprovements in Shock-Absorbers andRecoil-Checks, of which the followingis a specification.

This invention relates to a'spring suspension and supporting device inthe nature of y a, shock absorber and recoil check. I

' one of the thrust roller bearings.

\It is an object of the present invention to provide a' shock absorberand recoil check capable of being readily adjustable to efiicientlyoperate to support resiliently loads of different degrees; to provide adevice of thischaracter which is simple, and the parts of which arereadily assembled and easily taken Lapart and are substantial an'ddurable; and to provide a' device-of this type which may be readilypacked against-' -leakage, when charged with a lubricant, and which maybe readily applied'to the running gear and chassis of avehicle withoutaltering the same, other than by drilling for the attachment of asuitable hanger connection.

Other objects of the invention will be made manifest in the followingspecification. The invention consists of the parts and the constructionand combination of parts as hereinafter more fully described andclaimed,"having reference .to the accompanying drawings, in whichFhgu-pe 1v is a side view of the device as applied? Fig. 2 is a planview thereof. Fig. 3 is a central longitudinal section through thedevice. Fig. fl: is a section on line M, Fig. 3. Fig. 5 is a sectionaldetail through F ig. 6 is an edge'view of the disks.

2 indicates a ortion of a vehicle chassis and 3 the axle o a. part ofthe running gear of the vehicle. To the chassis there is suit-" ablyconnected an upwardly curved lever arm 4, :while a suitable lever arm 5,with a ball and socket joint 6, is secured by a bracket 7 to the axle 3.The lever arm 5 is keyed,,pinned or otherwise suitably secured to atubular hubs, having a disk 9 on itsinner end,- 'the inner. 'diametralsurface of which isi-igprovided with an undulating surface 10 formingsuccessive ridges and valleys, against which bears and runs a'set ofsuitable thrust rollers ll, though these need not necessarily be used. p

The ridged disk 9' is supported on its Specification of Letters Patent.

UNITED STATES PATENT OFFICE.

Patented Aug. 24., 1915.

plication filedluly 17, 1914. Serial No. 851,495.

outer diametral surface by aset of ball bearings 12 running on a.bearing ring. 13," WhlCh 1n turn is supported by a cap 14, to

.which the lever arm 4 is connected or inte grally formed. The cap 14 ispierced by a plurality of cap screws 15 which extendlongitudinally intoa cylindrical casing 16, which is tapped .at 17 to receive the capscrews 15.

Bearing upon the opposite sides of the thrust rollers 11 from the ridgeddisk 9 is-a similarly ridged disk 1'8, with apertures 19,

near its circumference through which the fastening screws 15 extend andwhich serve to prevent the disk 18,from revolving but guiding it forlongitudinal movement. Re-

acting upon the rear side of the disk 18 is I one or more helicalspringszQO, of suitable proportion and strength, which seat at their.oppositeends upon a washer or-seat member- 21 with threads22 fittingthethreaded portion of a central spindle Thespin'dle23 extends centrallythrough the housing 16 and is supported at its forward end the;

tubular'hub 8' of the disk9; the opposite end of the spindle 23 beingsuitably formed to receive a wrench,-or other tool, whereby it may beturnedso as to shift the spring seat 2'1 forwardly or rearwardly for theadjustment of the degree of pressure of the springs 20 against'theadjacentand longituagainst the bottom of the casing 52, to prebricantwithin the casing 16. B

degree of compression, through the adjustment of the spring seat- 21,and with thechassis 2 of the vehicle in its normal position tive turningmovement about the axis of'the spindle 23.

-10!) above the axle 3, then upon the downward 1 movement of thechassistoward the axles the upper lever 4- and the lever 5 have a rela-D tive movement toward each other and a relai levers at and 5 tendstorotatively change the position of the disk 9 with relation to the disk18; the .disk 9 being attached, as before stated, to the lever 5 and thedisk 18' being held against rotation through means of the e fasteningscrews 15 of the casing gfi. -Upon The relative rotati ffl the tendencyr E relative rotation between the disks; 9. a] 'd '18, these latter willbe .automatiditl ly separated, owing to the. rollingmovement of thethrust rollers 11' which are interposed between thesedisks and whichsupport the pressure due to the reaction of the springs 20; As the disks9 and 18 relativelyturn, the rollers 11 tend to ride up the inclinedwalls of the undulating sur faces10;fthe degree of separation of thedisks 9 and'18 being determined by the degree of relative rotation andthe separation being equal to the diameter'of the rollers 11, when thedisks are separated the maximum distance, with the rollers resting upontheridges of the undulating surfaces.

Uponthe upward movement of the chassis away from the axles 3 of thevehicle, the

- disks 9,and 18 and again move the rollers 11.

rollers 11 againmove down the undulating surfaces toward the valleysthereof. This allows: the slidable disk 18 to again move toward thenon-slidable disk 9, and if there is a rebounding tendency of thechassis with relation to the vehicle axles, then the relative movementof the levers 4 and 5 away from each other tend to relatively rotate theout of the Opposite valleys and up the oppo} site inclines of theundulating surface, thus again br nging into action the reacting springs20 which act then as resilient check; against the recoilI As shown inFig. 5, the rollers 11 may be in the form of doubletruncatedcones withtheir bases in juxtaposition forming a ridge in the periphery bf therollers. This ridge runs in the curved undulating tracks and isprevented by the walls of the tracks from radial movement. toward orfrom the spindle 23,

r Havmg'th 'usj described iny invention, what Iclaim andjdesire tosecure by Letters Iatent isa 1 A shock absorberand recoil check,comprising a casing, a disk mounted in one end of the casing forrelative rotation and having a pqrtionextending through the casingand'carrying q. lever connectible to a part of a vehicle," al-Iaterallyshiftable plate in the casing, 'ifesilient means in thecasing reacting upon saidrplate to shift the latter toward said disk,coiiperating means between said -ting theislida 2. In combination with acasing having a closed and an open end, an arm having a cap securedthereto, bolts extending longitudinally of the casing, and connected tothe latter and to the cap to cause the latter to cover the open casingend, a disk apertured to slidingly receive the bolts mounted within thecasing, a second disk in the casing confronting the first disk andhaving a hub which extends through the cap, coiiperating means betweenthe adjacent faces of the disks for effecting separation of the disksupon relative rotation of the latter, aspring bearing against the firstdisk, a turnable spindle 'jo'urnaled in the hub of the second end andhaving a threaded part, a member ,on the threaded spindle part engagingthe spring, and an arm connected to the hub of the second disk. 3. Incombination with a casing having an arm thereon which latter is forattachdisk and extending through the closed casing:

ment to 'a vehicle body, .a pair of members in the casing, cooperatingmeans between said members for effecting separatlon thereof uponrelative rotation of the members, a spindle on which said members aremounted I of the -members, a spring abutting one of rotation of thespindle,'s'aid spindle having v for partial rotary movement, an arm forat: tachment to the vehicle axle connected to one "the members at oneend'thereof, and means mounted on the spindle and "engaging the oppositeend of the spring to tension the lat ter and to adjustthees'pringtension-"upon one end projecting ,without the casing toenable manual turning thereof. v

4. In combination with a-casing having means for attachment to a vehiclebody, a

pair of members in thecasing, 'coiiperating, means between said membersfor eii'ecting separation thereof upon relative rotation of the members,a spindler on which one of I the members is slidably mounted and; onwhich the other member is. mounted for pan tial rotation, means onthe'rotatable mem-p' her for attachment to the vehicle 'axl.e, means tohold the s 'itlable member againstf rotation, a sprin "surrounding thespindle abut le member, and means on the spindle and operablefromlwithout the'casing by rotation of the spindle to' adju'st thetension of the,spring. v 4 In testimony whereof I have hereunto set myhand in the presence of two' subscribing.

witnesses.

Witnesses:

MARIE Gmmn, Gr. A. DOTY.

DOCTOR Rema

